Intermittent grip for fan-blowers or other machines



(No Model.) 2 SheetsShet 1.

J. P. BENDER. I'NTBRMITTENT GRIP FOR FAN BLOWE-RS OR OTHER MACHINES. No.376,361. Patented Jan. 10, 1888.

IIWVEJVTOR @w u T m .dt torney N. PETERS. PhulB'lilhngraplwnwuhingimIL'C.

2 Sheets-Sheet .2.

(No Model.)

"J. F. BENDER. INTERMITT'ENT GRIP FOR'FAN'BLOWERS OR OTHER MACHINES.

Patented Jan. 10, 1888.

WITNESSES flttorney.

.INTERMITTENT GRIP FOR FAN-BLO'WERS OR OTHER MACHINES.

UNITED STATES PATENT OFFIcE. f

J AOOB F. BENDER, OF COLUMBIA, ASSIGNOR OF ONE-HALF TO POTIS & WEBER, OFLANCASTER, PENNSYLVANIA.

SPECIFICATION forming part of Letters Patent No. 376,361, dated January10, 1888.

Application filed August 10, 1887. Serial No. 246,602. (No model.)

but the invention is applicable to all classes of machinery where arotary motion is desired to be obtained from a reciprocating motion. Iwish to be distinctly understood, however, as laying no exclusive claimto the application of my mechanical movement for this one purpose.

Prior to my invention a wheel has been given a continuous rotary motionin one direction by means substantially as'follows: A rim, a drum, ahub, or some equivalent body or part has been attached to or formed withor connected with the said wheel, and this body or part has had appliedto it a frictionstrap or equivalent friction device consisting ofjointed arms or fingers encircling wholly 'or in part the said body andadapted by suitable connecting mechanism to periodically grasp andrelease the said body or part, and while grasping it to pull it and itsconnected wheel around so as to rotate it, and while releasing to permitthe wheel to continue its rotary motion and it itself go back to aposition to obtain a fresh grasp for giving additional impulse to thewheel. I make this statement in order to make plain what willpresently-appear,that the grasping-fingers, hereinafter described, aresimply an equivalent of or substitute for the friction-strap, as thestate of the art clearly shows, and that such friction-strap or itsequivalent has been applied to a member of the wheel of some sort. Inthis view, then my invention, stated in very general terms, consists ina fly-wheel, which also subserves the purposes of a band-wheel,- runningloosely on a shaft and provided with a member-such as a hubfor thereception of a friction device within the above definition, combinedwith asleeve on the said shaft,and the said friction device,which,aswill presently appear, is adapted to receive an intermittentreciprocating motion that is converted into a continuous rotary motionof the said wheel, all as hereinafter particularly set forth andclaimed.

In the accompanying drawings, in the several figures of which like partsare similarly designated, Figure l is a side elevation of a portableblower containing myinvention, part of the frame being broken away. Fig.2 is a side elevation of the clutching and releasing mechanism. same'mechanism,looking at the opposite side. Fig. 4 is a longitudinalsection of thesaid mechanism, with the sprocket-wheel and sleevedisplayed to the right. Fig. 5 is a front elevation of'the same. Fig. 6is a plan view, and Fig. 7 is a side elevation, 'of the clutching andreleasing mechanism in releasing position.

Blowers for forges and the like are commonly constructed of a base, a,vertical standards b, suitably erected upon said base, and a blowerproper, c, of any approved pattern,

also supported on said base, the standards b.

receiving at their upper ends a rock-shaft, d, to which is swiveled alever, 6, having a band or bands, f, connecting said lever with asprocket-wheel, 9, arranged upon a shaft, h, of a combinedfly and bandwheel, 1'. So far as my invention comprisesablower of this descriptionit differs in no particular from the ordinary blowers on the market,excepting in relation to the arrangement of the sprocketwheel 9, ashereinafter particularized.

In my invention the shaft h is a non-rotating rod having hearings in thestandards I). The fly or band wheel irotates freely upon this Fig. 3 isa similar view of the rod or shaft, and said wheel, regarded as aband-wheel, differs from the ordinary bandwheel in that it has the hub12 projecting from jectionsuch as an arm, jextending laterallytherefrom. Instead of the arm 9', the sleeve may be made with a circularflange or disk,j,

as indicated in Fig. 6.

By the expression projection made fast to the sleeve, or words of likeimport, I mean the armj or its substitute and equivalent, the disk j.

An arm, k, is arranged to turn loosely upon the shaft h, and this armserves as a pivot for two segmental fingers, ll, which fingers areconcentric with respect to the hub i,- bnt the finger Z has an eccentricprojecting portion or crook, l, which is pivoted to the shorter arm of abell-crank lever, m, and to the angle of thislever is pivoted the otherfinger, Z. These fingers, as already stated, are the equivalentinfunctionofafriction-strap. Thebell-crank lever in is connected by alink, a, with the arm The arm j has a pin or stop, 0, which at certainperiods engages and disengages the link it, for a purpose presentlyappearing.

The operation is substantially as follows: \Vhen the lever eis depressedin the direction of arrow 2 in Fig. 1, the chainfwill obviously be movedin the direction of the arrow 3. This will rotate the sprocket-wheel,and with it the sleeve 9 and the arm j. The depression of the arm jeffects, through the link 12, the depression of the lever m, and thismovement of the lever m draws the fingers ZZinto frictional contact withthe hub i, causing the said fingers to firmly grasp the said hub. Thestop 0 on the arm j, bearing against the link it, makes a firmconnection of the arm with the lever m, and through it with the fingersll, and thereby causes said link, lever, and fingers to rotate with thesprocket-wheel and sleeve. When the motion of the lever e isreversed,tl1e arm j will be elevated and its stop 0 will leave the linka, the link n will be correspondingly elevated, and the lever in will bevibrated so as to separate the fingers Z Z, substantially as indicatedin Fig. 7, thus releasing the band-wheel and allowing it to run freeuntil the down motion of thelever is repeated.

I desire to call special attention to the fact that on the upstroke ofthe lever the clutch mechanism entirely releases the band-wheel, andhence, after the wheel is once under way, its continuous rotation in onedirection is not interrupted at all bythe vibration of the lever e, sothat the said band-wheel may run for some little while of its ownmomentum.

In Fig.1 I have shown acontinuous band,f, in the shape of a chain toengage the sprocketwheel; but there are many other equivalent devicesfor driving machinery in this conncction which may be substituted forthis chain. \Vhen steel ribbons are used as the driver, the sleeve 9will be modified somewhat,.as shown in Fig. 6, wherein the flangedivides the sleeve into two spools which receive the ribbons or otherbands by having them wound thereon in opposite directions.

indicated by the arrow 5 in Fig. 1, then the wheel could be braked bythis device as now arranged by moving it in the direction of the arrow6.

I desire to be distinctly understood that my invention is applicable toall classes of machinery where a continuous rotary motion in onedirection is desired to be obtained from a reciprocating motion; and asthe hub will not always afford the most convenient or desirable surfaceor device to be grasped by the friction device I wish to be understoodas including within the term member to be grasped, or words of likeimport, all such parts as drums, pulleys, rims, and the like, it beingremenr bercd that drums, pulleys, rims, and the like are commonly usedfor this purpose.

IVhat I claim is- 1. A shaft, a wheel thereon, and its member engaged bya friction device, combined with such friction device, the lever m, towhich said device is secured, a projection fast to the shaft, a linkconnecting the said lever and projection, and a stop for said link,substantially as described.

2. Ashaft or rod anda whecl loosely secured thereon and provided with amember engaged by a friction device, combined with such friction device,composed of pivotally-connected fingers, a lever to which they aresecured at different points, a rotatable sleeve loose on said shaft orrod, a projection from said sleeve made fast thereto, and a linkconnecting said projection and the aforesaid lever, substantially asdescribed.

3. The combination, substantially as set forth, of the stationary shaftorjournal, a rotary sleeve thereon having a projection made fast to it,an arm rotatable upon the sleeve, fingers pivoted to each other and tosaid arm, and a lever to which said fingers are pivoted at differentpoints, a link connecting said lever with the projection from thesleeve, and a wheel to be rotated intermittently engaged to this end bythe said fingers, substantially as described.

In testimony whereof Ihavehereunto set my hand this 8th day of August,A. D. 1887.

JACOB F. BENDER. Witnesses:

ANDREW J. KAUFFMAN, H. G. YOUNG.

IOU

